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author | Rafael J. Wysocki <rjw@rjwysocki.net> | 2013-10-25 22:36:40 +0200 |
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committer | Rafael J. Wysocki <rjw@rjwysocki.net> | 2013-10-25 22:36:40 +0200 |
commit | 6ddee424fea2d269c2f402278d93165c7b92dc58 (patch) | |
tree | c1b1d0d9058846a6da22def648dea61e16faacd0 /drivers/cpufreq/omap-cpufreq.c | |
parent | e4db1c7439b31993a4886b273bb9235a8eea82bf (diff) | |
parent | a814613b9a32d9ab9578d9dab396265c826d37f0 (diff) | |
download | op-kernel-dev-6ddee424fea2d269c2f402278d93165c7b92dc58.zip op-kernel-dev-6ddee424fea2d269c2f402278d93165c7b92dc58.tar.gz |
Merge back earlier 'pm-cpufreq' material.
Conflicts:
drivers/cpufreq/omap-cpufreq.c
Diffstat (limited to 'drivers/cpufreq/omap-cpufreq.c')
-rw-r--r-- | drivers/cpufreq/omap-cpufreq.c | 64 |
1 files changed, 14 insertions, 50 deletions
diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index 20190f5..ac552d0 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -40,13 +40,6 @@ static struct clk *mpu_clk; static struct device *mpu_dev; static struct regulator *mpu_reg; -static int omap_verify_speed(struct cpufreq_policy *policy) -{ - if (!freq_table) - return -EINVAL; - return cpufreq_frequency_table_verify(policy, freq_table); -} - static unsigned int omap_getspeed(unsigned int cpu) { unsigned long rate; @@ -167,81 +160,52 @@ static inline void freq_table_free(void) static int omap_cpu_init(struct cpufreq_policy *policy) { - int result = 0; + int result; mpu_clk = clk_get(NULL, "cpufreq_ck"); if (IS_ERR(mpu_clk)) return PTR_ERR(mpu_clk); - if (policy->cpu >= NR_CPUS) { - result = -EINVAL; - goto fail_ck; - } - - policy->cur = omap_getspeed(policy->cpu); - - if (!freq_table) + if (!freq_table) { result = dev_pm_opp_init_cpufreq_table(mpu_dev, &freq_table); - - if (result) { - dev_err(mpu_dev, "%s: cpu%d: failed creating freq table[%d]\n", + if (result) { + dev_err(mpu_dev, + "%s: cpu%d: failed creating freq table[%d]\n", __func__, policy->cpu, result); - goto fail_ck; + goto fail; + } } atomic_inc_return(&freq_table_users); - result = cpufreq_frequency_table_cpuinfo(policy, freq_table); - if (result) - goto fail_table; - - cpufreq_frequency_table_get_attr(freq_table, policy->cpu); - - policy->cur = omap_getspeed(policy->cpu); - - /* - * On OMAP SMP configuartion, both processors share the voltage - * and clock. So both CPUs needs to be scaled together and hence - * needs software co-ordination. Use cpufreq affected_cpus - * interface to handle this scenario. Additional is_smp() check - * is to keep SMP_ON_UP build working. - */ - if (is_smp()) - cpumask_setall(policy->cpus); - /* FIXME: what's the actual transition time? */ - policy->cpuinfo.transition_latency = 300 * 1000; - - return 0; + result = cpufreq_generic_init(policy, freq_table, 300 * 1000); + if (!result) + return 0; -fail_table: freq_table_free(); -fail_ck: +fail: clk_put(mpu_clk); return result; } static int omap_cpu_exit(struct cpufreq_policy *policy) { + cpufreq_frequency_table_put_attr(policy->cpu); freq_table_free(); clk_put(mpu_clk); return 0; } -static struct freq_attr *omap_cpufreq_attr[] = { - &cpufreq_freq_attr_scaling_available_freqs, - NULL, -}; - static struct cpufreq_driver omap_driver = { .flags = CPUFREQ_STICKY, - .verify = omap_verify_speed, + .verify = cpufreq_generic_frequency_table_verify, .target = omap_target, .get = omap_getspeed, .init = omap_cpu_init, .exit = omap_cpu_exit, .name = "omap", - .attr = omap_cpufreq_attr, + .attr = cpufreq_generic_attr, }; static int omap_cpufreq_probe(struct platform_device *pdev) |